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421 results for “cranial anatomy”
Figure 9. Ultra high resolution X in Cranial anatomy of Paleocene and Eocene Labidolemur kayi (Mammalia: Apatotheria), and the relationships of the Apatemyidae to other mammals
Figure 9. Ultra high resolution X-ray computed tomography (uhrCT) slices of USNM 530208, and enlarged view of the left auditory region. See caption for Figure 8. In all images the white arrow indicates a fragment of bone, identified as a piece of the basisphenoid, which has been displaced rostrally along the basisphenoid process. In all four uhrCT images the portion of the basisphenoid medial to the fragment in question is clearly damaged. This can be seen in its irregular outline, and in the lack of symmetry with the less damaged right side. Panel (D) also shows some fragments of bone ventrally, which underscore the damage that has occurred in this region. The enlarged view of the left auditory region has been tipped medially so that the medial wall of the tympanic cavity is visible. Note the step fractures along the fragment of basisphenoid, indicated with the black arrow, indicating damage and probably displacement.
Figure 1 in Cranial anatomy of Paleocene and Eocene Labidolemur kayi (Mammalia: Apatotheria), and the relationships of the Apatemyidae to other mammals
Figure 1. Photographs of Labidolemur kayi, USNM 530221. Skull in (A) dorsal, (B) left, (C) right, and (D) right view tilted ventrally. As this skull is part of a semiarticulated skeleton, it is not possible to take a photograph from a strictly ventral perspective. Scale bar: 5 mm.
Data from: Cranial anatomy of the mekosuchine crocodylian Trilophosuchus rackhami Willis, 1993
<p>One of the best-preserved crocodylian fossil specimens from the Cenozoic of Australia is the holotype of the mekosuchine <em>Trilophosuchus rackhami,</em> from the middle Miocene (13.56 ± 0.67 Ma) Ringtail Site at Riversleigh, northwestern Queensland. Although lacking most of the snout, the holotype skull of <em>T. rackhami</em> (QMF16856) has an exceptionally well-preserved cranium. Micro-CT scanning of the holotype has allowed for all the preserved cranial bones to be digitally disarticulated, facilitating an unprecedented insight into the cranial anatomy of not just <em>T. rackhami</em>, but any mekosuchine. <em>Trilophosuchus rackhami</em> was a small-bodied crocodylian and one of the most morphologically distinct mekosuchines, characterized by a unique combination of cranial characteristics several of which are exclusive to the species. Fossil material that is definitively referrable to the species <em>T. rackhami</em> is currently known solely from the middle Miocene Ringtail Site. However, an isolated parietal from Hiatus Site at Riversleigh demonstrates that <em>Trilophosuchus</em> also occurred during the late Oligocene (~25 Ma), extending the range of the genus by more than ten million years. The new description of <em>T. rackhami</em> also allowed for a reevaluation of its phylogenetic relationships. Our results reaffirm the placement of <em>T. rackhami</em> as a member of Mekosuchinae within the subclade Mekosuchini. In all analyses, Mekosuchinae was consistently found to be monophyletic and part of the larger crocodylian clade Longirostres. However, the assignment of Mekosuchinae as a subset of Crocodylidae is brought into question, suggesting that the status of Mekosuchinae as a subfamily should be reconsidered.</p>
Figure 15 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 15. Computed tomography slices of the maxillary and dentary tooth rows of ºAM-PK-6536, Mesosuchus browni, showing intermedate condition of tooth implantation and arrangement. A, sagiưal section of less maxilla; B, transverse section of right maxilla; C, transverse section of right dentary. Dashed yellow line indicates region of seperation between tooth base and alveolar bone of the maxilla.
Figure 14 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 14. Strict consensus tree calculated from our re-analysis of the character matrix constructed by Ezcurra et al. (2016), with adjusted scorings for Mesosuchus browni. Mesosuchus browni is presented in red text, and the clades Rhynchosauria and Rhynchosauridae are labelled.
Figure 13 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 13. Strict consensus tree calculated from our re-analysis of the character matrix constructed by Scheyer et al. (2020) with adjusted scorings for Mesosuchus browni. Mesosuchus browni is presented in red text, and the clades Rhynchosauria and Rhynchosauridae are labelled.
Figure 10 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 10. Digitally isolated left mandible of SAM-PK-6536, Mesosuchus browni, in: A, lateral; B, medial; C, ventral; D, anterior; and E, posterior views.
Figure 12 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 12. Internal anatomy of left dentary and splenial of SAM-PK-6536, Mesosuchus browni: A, left dentary in lateral view; B, left dentary in dorsal view; C, left dentary in anterior view; D, left splenial in anterior view; E, left splenial in posterolateral view; F, left splenial in medial view.
Figure 11 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 11. Internal anatomy of the left maxilla and right jugal of SAM-PK-6536, Mesosuchus browni: A, left maxilla in lateral view; B, left maxilla in anterior view; C, left maxilla in medial view; D, left maxilla in posterior view; E, right jugal in dorsal view; F, right jugal in lateral view; and G, right jugal in anterior view.
Figure 2 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 2. Schematic tree displaying the generally accepted phylogenetic relationships of the taxa we use for general comparisons in our description of Mesosuchus browni.
Figure 9 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 9. Digitally isolated septomaxilla of SAM-PK-6536, Mesosuchus browni, in coronal section: A, through centre of Jacobson's chamber in posterolateral view; and B, through vomer in posterior view.
Figure 7 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 7. Digitally isolated palatal region of SAM-PK-6536, Mesosuchus browni, in: A, dorsal; B, posterior; and C, medial views.
Figure 8 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 8. Digitally isolated palatal complex of SAM-PK-6536, Mesosuchus browni, in: A, dorsal; B, right lateral; and C, anterior views.
Figure 3 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 3. Digitally segmented skull of SAM-PK-6536, Mesosuchus browni, in: A, right lateral; B, left lateral; C, anterior; and D, posterior views.
Figure 1 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 1. Volume renderings of the skull of SAM-PK-6536, Mesosuchus browni, in: A, left lateral; B, right lateral; C, ventral; D, dorsal; E, posterior; and F, anterior views.
Figure 5 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 5. Digitally isolated rostrum and orbital bones of SAM-PK-6536, Mesosuchus browni, in: A, medial; B, anterolateral; and C, posterior views.
Figure 4 in Cranial anatomy of the Triassic rhynchosaur Mesosuchus browni based on computed tomography, with a discussion of the vomeronasal system and its deep history in Reptilia
Figure 4. Digitally segmented skull of SAM-PK-6536, Mesosuchus browni, in: A, dorsal; and B, ventral views.
FIGURE 8 in Cranial anatomy of tadpoles of five species of Scinax (Hylidae, Hylinae)
FIGURE 8. Hyobranchial apparatus of Scinax species, ventral view. (A) S. uruguayus stage 36, (B) S. aff. pinima stage 35, (C) S. acuminatus stage 36, (D) S. aromothyella stage 29, and (E) S. berthae stage 38. References: cb, ceratobranchialia; ch, ceratohyale; cp, copula II; cpIII–IV, commissura proximalis ceratobranchialia III–IV; pab, processus anterior branchialis; pah, processus anterior hyalis; pal, processus anterolateralis hyalis; ph, planum hypobranchiale; pph, processus posterior hyalis; pr, pars reuniens; pu, processus urobranchialis; s, spicula I–IV. Bar = 1 mm.
FIGURE 4 in Cranial anatomy of tadpoles of five species of Scinax (Hylidae, Hylinae)
FIGURE 4. SEM photomicrographs of the buccal floors of Scinax species. (A) Scinax uruguayus stage 37; (B) S. aff. pinima stage 37; (C) S. acuminatus stage 39; (D) S. aromothyella stage 31; (E) Scinax berthae stage 38. References: bfa, buccal floor arena; bfap, buccal floor arena papillae; bp, buccal pocket; g, glottis; ilp, infralabial papilla; la, lingual anlage; mn, median notch; pp, prepocket papillae; sp, secretory pits; vv, ventral velum. Bar = 1 mm.
FIGURE 3 in Cranial anatomy of tadpoles of five species of Scinax (Hylidae, Hylinae)
FIGURE 3. Keratinized sheets associated to the lower jaw sheath of: (A) Scinax uruguayus and (B) S. aff. pinima. Spurs associated to the lower jaw sheath of: (C) S. acuminatus, (D) S. nasicus, (E) S. uruguayus, (F) S. aff. pinima, (G) S. aromothyella, and (H) S. berthae. Pictures are not to scale.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.